Dreamcast USB C PD
thingiverse
This is an adapter to let you use USB C PD to power your dreamcast, I used it with this PD trigger, https://www.amazon.com/dp/B09BZTXHY8?psc=1&ref=ppx_yo2_dt_b_product_details The screw I used was a m2 x 4mm Any USB C PD wall plug that can do 12v @ 3a should be fine, though I haven't tested this mod for any long period of time so try at your own risk STEP files are included if you need to modify them
Download Model from thingiverse
With this file you will be able to print Dreamcast USB C PD with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Dreamcast USB C PD.